Easy to fit intermediate module - suitable for curved and square edge rangesThe intermediate switch allows for more than 2 switches in the circuitThis has been manufactured using high grade thermoset Urea which effectively inhibits the growth of infectious diseases, including MRSA, E-Coli, Salmonella and Klebsiella Pneumonia bacteriaWe recommend a minimum mounting box depth of 25mmCertified to IEC/BS EN60669"